Image processing method, image signal processor, and image processing system including the same
a signal processor and image processing technology, applied in the field of image signal processor and image processing system including the same, can solve problems such as noise in signal processing, excessive power use, and degrade image quality
Active Publication Date: 2014-05-01
SAMSUNG ELECTRONICS CO LTD
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Benefits of technology
The invention relates to an image processing method that includes downscaling, denoising, and demosaicing steps to produce high-quality RGB image data. Specifically, the method involves receivingtringent color information, green color information, and blue color information from an image sensor, and then performing separate processing steps for each color channel. The green color information is combined with the red and blue color information to create a modified Bayer format image. The modified image is then denoised and demosalicated to produce RGB image data with improved quality. Another embodiment of the invention is a method that involves generating image data of a modified Bayer format by combining the green color information with the red and blue color information, and then denoising and demosaicing the image data to produce RGB image data with improved quality.
Problems solved by technology
While techniques can be used to remove the noise from the image data, these techniques may use an excessive amount of power or degrade image quality.
Method used
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[0027]The inventive concept now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. Like numbers refer to like elements throughout. It will be understood that when an element is referred to as being “connected” or “coupled” to another element, it can be directly connected or coupled to the other element or intervening elements may be present. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise.
[0028]Image sensors according to an embodiment of the inventive concept include either a charge coupled device (CCD) or a complementary metal oxide semicondu...
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An image processing method includes: receiving image data of a Bayer format comprising red color information, green color information, and blue color information, generating image data of a modified Bayer format by combining the green color information with the red color information and combining the green color information with the blue color information while downscaling the image data of the Bayer format to a target resolution, denoising the image data of the modified Bayer format, and generating RGB image data by demosaicing the denoised image data of the modified Bayer format.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority under 35 U.S.C. §119(a) to Korean Patent Application No. 10-2012-0122501 filed on Oct. 31, 2012, the disclosure of which is incorporated by reference in its entirety herein.BACKGROUND[0002]1. Technical Field[0003]Exemplary embodiments of the inventive concept relate to a method of processing raw image data sensed by an image sensor into output image data, an image signal processor to execute the method, and an image processing system including the image signal processor.[0004]2. Discussion of Related Art[0005]An image sensor includes pixels that convert an electrical signal corresponding to the brightness of incident light into a digital signal. The image sensor may be formed in a Bayer pattern and provide Bayer image data corresponding to the brightness of light incident on the Bayer pattern.[0006]The Bayer image data provided from the image sensor may be subjected to signal processing, such as color inte...
Claims
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IPC IPC(8): H04N9/64
CPCH04N9/646G06T3/4015H04N5/2628H04N23/81H04N23/843H04N25/134G06T5/00
Inventor ARTYOMOV, EVGENYSFARADI, ROEELEE, JU YOUNGZINEVICH, ARTEMVORONOV, GERMANFAINSTAIN, EUGENE
Owner SAMSUNG ELECTRONICS CO LTD